tightrope

The acrobat balanced with a long pole while walking across the tightrope.

(Chinese) 杂技演员在走钢丝时用一根长杆平衡身体。

The diplomat is walking a tightrope between the two conflicting nations.

(Chinese) 这位外交官正在两个冲突国家之间走钢丝（小心维持平衡）。